On 4 star maps I am hitting most circles but I tend to miss around 1 every 20-30.
Missing / sliderbreaking every 20-30 notes is terrible, sorry, no hate or anything, it's honest truth. It just indicate that this map isn't for you at all.
Missing / sliderbreaking occassionaly and being able to keep up high combo with decent acc makes map proper training ground - that's whats called challenging yourself in proper way.
Not challenging map is one what you can FC within 1-2-3 plays.
Personaly, i don't have this kind of problems but my progression is like it is - slow but stedy. 200pp per 1-1,5 month while i spend a lot of time playing maps betwin 4 and 4,5 star while already like 70% of them doesn't give me pp is like hidden key. You actualy need to fiscover it yourself why.
I can just tell you that while my pp and comfortable ground of maps is betwin 4,4-4,6* whenever i jump into map like Halozy Paranoid Lost which is afair 5,2*, my first run on it was 95% acc below 10 misses. Simple reason: a lot of practice focused on aim and acc on patterns and i can assure you - if you play A LOT of maps in your skill range, high variety of maps, you actualy learn a lot.
Just don't fuckin retry.
~80% of my top rank plays are below 20 plays.